From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Stress-strain diagram for Steel #1, showing both torsion and tension curves.
| Identifier | ExFiles\Box 158\4\ scan0069 | |
| Date | 10th October 1936 guessed | |
| 41360 STRESS, THOUSAND LBS. PER SQ. INCH DEGREES TORQUE TORSION CURVE STRESS, THOUSAND LBS. PER SQ. INCH INCHES ELONGATION TENSION CURVE Figure 6. Stress-Strain Diagram for Steel #1. Ultimate strength 215,000 P.S.I. Tension, 161,000 P.S.I. Torsion Elastic Limit 196,000 P.S.I. Tension, 119,000 P.S.I. Torsion Elongation 6.25% Reduction of Area 47.8%, Rockwell 45-47 C. | ||